Briefly describe how triangulation is used to locate the epicenter of an earthquake
What will be an ideal response?
For triangulation, one needs at least three seismic stations and their travel–time graphs. The distance from the earthquake epicenter for each station can be determined by the arrival time difference of P and S waves. This distance can be in any location at all, so a circle around the station with a radius of the distance can be drawn for each station. Where these circles intersect is the epicenter of the earthquake.
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The early fish were jawless and armored, and inhabited shallow marine waters
a. True b. False
The ITCZ has little effect on tropical climates
Indicate whether the statement is true or false
Which is FALSE about the product life cycle?
A) Products at different stages of production tend to be manufactured at different places within corporate systems. B) Innovation begins in advanced countries. C) Less developed countries increasingly specialize in the task of transforming raw materials into commodities. D) It occurs in 3 stages. E) In Stage 1 competitors steal ideas.
The boundaries of climate regions are changing worldwide
Indicate whether the statement is true or false